tag:blogger.com,1999:blog-4105181543399499190.post3192873542728043057..comments2008-07-29T13:41:15.016-07:00Miss Mota Mouthhttp://www.blogger.com/profile/18104167100112747522noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-4105181543399499190.post-27887751150025806242008-07-29T13:02:00.000-07:002008-07-29T13:02:00.000-07:00Sorry, perhaps I was a bit too technical. You can read a bunch of technical info about Coefficient of Drad (Cd) here: http://en.wikipedia.org/wiki/Drag_coefficient. But basically, it's a measure of percentage of air deflected by an object moving at speed. According to Wikipedia, a flat plat of glass that stops all air hitting it has a Cd of 1. A car with a coefficient of drag of 0.19 allows 81% of the air to flow around it smoothly. <BR/><BR/>For comparison, most modern cars have a Cd of between 0.3 and 0.35. A Hummer H2 has a Cd of 0.57 and a Prius a Cd of 0.26. <BR/><BR/>Cd multiplied by the frontal area of a vehicle is the vehicle's total drag. Again, the total drag of the EV1 is calculated at 3.95 (using square feet) and a Hummer H2 is 26.5. Cars tend to range from between 6 and 9. <BR/><BR/>Without thinking about math, just think that at speed, the more a energy a car needs to just push through the air, the more energy it will use. That drag is a combination of the Cd (how cleanly the car is designed) and Frontal Area (how big it is).<BR/><BR/>SteveStevestevelovescars.blogspot.comnoreply@blogger.comtag:blogger.com,1999:blog-4105181543399499190.post-51515175408405158472008-07-25T12:29:00.000-07:002008-07-25T12:29:00.000-07:00whats a "coefficient drag of 19"? this artilce is too confrusing<BR/><BR/>i miss old miss mota mouthAnonymousnoreply@blogger.com